Double lap-seam for sewed articles



J. J. HEAP. DOUBLE LAP SEAM FOR SEWED ARTICLES. APPLICATIUN FILED NOV.8. 1918.

1, 848, 645, Patented Aug. 3, 1920.

UNITED STATES PATENT OFFICE.

JESSE J. HEAI', OF NEW YORK, N. Y., ASSIGNOR TO UNION SPECIAL MACHINECOMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DOUBLE LAP-BEAM FOR SEWED ARTICLES.

Specification of Letters Patent.

Patented Aug. 3, 1920.

Application filed November 8, 1918. Serial No. 261,649.

To all whom it may concern:

Be it known that I, JEssE J. HEAP, a citizen of the United States,residing at New York city, in the county of Kings, State of New York,have invented certain new and useful Improvements in Double Lap-Seamsfor Sewed Articles, of which the following is a description, referencebeing had to the accompanying drawing and to the figures of referencemarked thereon.

The invention relates to new and useful improvements in lap seams forsewed articles, and more particularly to a double lap seam-that is, aseam wherein the edge of each fabric section is folded in and the rawedges of the fabric are concealed by the seam.

An object of the invention is to provide a double lap seam of the abovecharacter, wherein one of the fabric sections is provided with areentrant fold back from its edge forming, in appearance, from thefabric section a tape, so that when the two fabric sections are joinedby parallel lines of stitches the seam has the appearance of beingcovered by a tape.

n the drawings which show by way of illustration one embodiment of theinvention:--

Figure 1 is an enlarged sectional view through a seam embodying theinvention; Fig. 2 is a perspective view of the same.

My improved double lap seam is formed by folding underneath one of theedges of one fabric section and at a distance back from the edge forminga rentrant fold, so that there is formed 1n appearance a tape from thefabric section itself. The other section of the fabric is interfolded orleft straight and the two sections are secured together by parallellines of stitches passing throu h the fabric sections adjacent the ed esof t e tape.

eferring more in detail to the drawings, I have shown the two fabricsections at F and F. The fabric section F has its edge folded back at 1.This same fabric section is also formed with a reentrant fold 2- thatis, the fabric is folded to the right and then to the left, as viewed inFigs. 1 and 2, and this forms from the section of the fabric a strip 3,which has the appearance of a separate tape. The under fabr c section F,as shown in the drawings, is

folded back at 4. From certain aspects of the invention, this lowersection of fabric may be straight and without fold as it is on the wrongside of the seam. Parallel lines of stitches 5 and 6 are passed throughthe fabric sections adjacent the respective edges of the strip 3. Thestitches 5 pass through the reentrant fold 2 and throu h the folded edge4 of the fabric section T and serves to join the fabric sections andalso secure the reie'ntrant fold. The stitches 6 pass through the foldededge 1 of the fabric section F and through the fabric section F andjoins the two fabric sections.

It will thus be apparent that I have provided a lap seam for sewedarticles which includes two fabric sections, one of which has its edgefolded and also has a reentrant fold back from the edge forming inappearance a tape, while the other section under lies the tape appearingpart and the two sections are joined by the two parallel lines ofstitches adjacent the edges of the tape appearing part, which serve alsoto secure the reentrant fold.

It is obvious that minor changes in the details of construction may bemade without departing from the spirit of the invention, as set forth inthe appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

l. A lap seam for sewed articles comprising two fabric sections, one ofwhich has its edge folded and has a rentrant fold back from the edgeforming from the fabric section in appearance a tape, said rentrant foldterminating at one side of and spaced from the folded edge, the othersection underlying the folded edge and rentrant fold, and two parallellines of stitches adjacent the edges of the tape appearing part andpassing through and joining the abric sections, said lines of stitchesbeing so located that one passes through and secures the reentrant foldand the other passes through and secures the folded edge.

2. A lap seam for sewed articles comprising two fabric sections, one ofwhich has its edge folded and has a reentrant fold back from the edgeforming from the fabric section in appearance a tape, the other sectionhaving its edge folded and underlyingthe tape appearing part, and twoparallel lines of stitches adjacent the edges of the tape In testimonywhereof I aflix my signature, appearing part and passing through and inthe presence of two Witnesses.

oinmg the fabric sections, one of SBJd iines cf stitches being solocated as to pass JESSE HEAP' 5 through and secure the reentrant foldand Witnesses:

also through and secure the fold in the under- MATTHEW P. RYAN,

lying section of fabric. ROBERT J. MITCHELL.

